Stock watering tank



FIG. 1 is a perspective view of a stock watering tank showing my new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a side elevational view thereof, the opposite side being a mirror image of the side shown;

FIG. 4 is an end elevational view of one end thereof; and,

FIG. 5 is an elevational view of the opposite end thereof.

The bottom is plain and unornamented. 

The ornamental design for a stock watering tank, as shown and described. 